Mapledurwell, Hampshire – Farleygreene Ltd, experts in sieving technology, have this week launched their new Localised Dust Extraction System (LDEE) for their Sievmaster Easilift sack tip sieve.
Dust control solutions are widely implemented within the materials handling industry due to the risk that migratory dust creates. Many applications can produce a lot of excess dust during processing, so having solutions available that contain dust is a key priority for manufacturers. Dust control is not only essential for maintaining hygiene standards, but to reduce the risk of explosion arising from air bourne dust particles.
Farleygreene’s LDEE is based on their Sievmaster Easilift sack tip station and features a complete dust control system. It can be fully integrated into production lines to enhance and improve all aspects of safety and hygiene whilst sack tipping powders.
“The concept originally came about following a customer request” states Daniel Morlan, Area Sales Manager at Farleygreene, “but the innovative design has proven to be a successful addition to our popular Easilift model, and as a result, it has been added to our product range and is now available for general sale”, he adds.
The customer needed to screen very dusty food powders at 2000kg per hour from sacks and required a system to control the amount of dust being produced to protect both the user and the surrounding environment. Rather than having a dust extraction system as an add on, the customer required a robust integrated solution and approached Farleygreene for a solution.
The LDEE model incorporates a horizontal filter and side mounted fan system, which is built onto the back of the sack tip hood. This allows a much larger HEPA, food grade, anti-static, ATEX compliant filter to be incorporated, trapping 99.9902% of dust down to a particle size of 0.2 micron.
Compared to the traditional solution, which is built vertically onto the hood, the side mounted system is 400mm shorter to fit in a single story and access to the filter is now quick and easy. Tool free band clamps ensure that the cover is easily disconnected, providing access to the filter for removal and cleaning in less than one minute.
How the LDEE works
A powerful ATEX 22 rated fan is coupled with the filter and works to pull the dust away from the user and into the filter. At the same time, the removable baffle plate, directs the flow of dust up into the filter. The fan and filter operation point has been finely tuned to balance energy efficiency and extraction capabilities.
The pneumatically assisted hood door is fitted with an interlock switch, once closed, a reverse pulse function is activated which blows air into the filter to clean it. A stainless steel ATEX22 push-button programmable control panel is available to manage the whole system, including the sieve unit.
The electronic extraction reduces the amount of air required over compressed air vacuum pump systems which helps to reduce a business’s carbon footprint and energy usage. Using compressed air is less efficient due to the losses associated with transmission and the initial compressing of the air. The electric system is easier to fit within existing infrastructure as the low compressed air demand for the filter cleaning can be catered for by existing compressors.
For customers requiring a system who already have a Sievmaster Easilift system, the LDEE is available as a bolt on system.
The whole solution is ATEX rated as standard and made with FDA & EC1935/2004 compliant materials. The sieve itself is available in either 550 or 950 diameters depending on throughput required.